<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>用户页面</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      text-align: center;
      margin-top: 100px;
    }

    h1 {
      color: #333;
    }

    p {
      color: #666;
    }
  </style>
</head>

<body>
  <h1>用户 ID: {{ user_id }}</h1>
  <p>欢迎访问用户页面！</p>
</body>

</html>